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  Assessing tension metrics with dark energy survey and Planck data

Lemos, P., Raveri, M., Campos, A., Park, Y., Chang, C., Weaverdyck, N., et al. (2021). Assessing tension metrics with dark energy survey and Planck data. Monthly Notices of the Royal Astronomical Society, 505(4), 6179-6194. doi:10.1093/mnras/stab1670.

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Lemos, P., Author
Raveri, M., Author
Campos, A., Author
Park, Y., Author
Chang, C., Author
Weaverdyck, N., Author
Huterer, D., Author
Liddle, A. R., Author
Blazek, J., Author
Cawthon, R., Author
Choi, A., Author
DeRose, J., Author
Dodelson, S., Author
Doux, C., Author
Gatti, M., Author
Gruen, D., Author
Harrison, I., Author
Krause, E., Author
Lahav, O., Author
MacCrann, N., Author
Muir, J., AuthorPrat, J., AuthorRau, M. M., AuthorRollins, R. P., AuthorSamuroff, S., AuthorZuntz, J., AuthorAguena, M., AuthorAllam, S., AuthorAnnis, J., AuthorAvila, S., AuthorBacon, D., AuthorBernstein, G. M., AuthorBertin, E., AuthorBrooks, D., AuthorBurke, D. L., AuthorRosell, A. Carnero, AuthorKind, M. Carrasco, AuthorCarretero, J., AuthorCastander, F. J., AuthorConselice, C., AuthorCostanzi, M., AuthorCrocce, M., AuthorPereira, M. E. S., AuthorDavis, T. M., AuthorVicente, J. De, AuthorDesai, S., AuthorDiehl, H. T., AuthorDoel, P., AuthorEckert, K., AuthorEifler, T. F., AuthorElvin-Poole, J., AuthorEverett, S., AuthorEvrard, A. E., AuthorFerrero, I., AuthorFerte, A., AuthorFlaugher, B., AuthorFosalba, P., AuthorFrieman, J., AuthorGarcia-Bellido, J., AuthorGaztanaga, E., AuthorGerdes, D. W., AuthorGiannantonio, T., AuthorGruendl, R. A., AuthorGschwend, J., AuthorGutierrez, G., AuthorHartley, W. G., AuthorHinton, S. R., AuthorHollowood, D. L., AuthorHonscheid, K., AuthorHoyle, B.1, Author              Huff, E. M., AuthorJames, D. J., AuthorJarvis, M., AuthorLima, M., AuthorMaia, M. A. G., AuthorMarch, M., AuthorMarshall, J. L., AuthorMartini, P., AuthorMelchior, P., AuthorMenanteau, F., AuthorMiquel, R., AuthorMohr, J. J.1, Author              Morgan, R., AuthorMyles, J., AuthorOgando, R. L. C., AuthorPalmese, A., AuthorPandey, S., AuthorPaz-Chinchon, F., AuthorMalagon, A. A. Plazas, AuthorRodriguez-Monroy, M., AuthorRoodman, A., AuthorSanchez, E., AuthorScarpine, V., AuthorSchubnell, M., AuthorSecco, L. F., AuthorSerrano, S., AuthorSevilla-Noarbe, I., AuthorSmith, M., AuthorSoares-Santos, M., AuthorSuchyta, E., AuthorSwanson, M. E. C., AuthorTarle, G., AuthorThomas, D., AuthorTo, C., AuthorTroxel, M. A., AuthorVarga, T. N.1, Author              Weller, J.1, Author              Wester, W., Author more..
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1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 Abstract: Quantifying tensions – inconsistencies amongst measurements of cosmological parameters by different experiments – has emerged as a crucial part of modern cosmological data analysis. Statistically significant tensions between two experiments or cosmological probes may indicate new physics extending beyond the standard cosmological model and need to be promptly identified. We apply several tension estimators proposed in the literature to the dark energy survey (DES) large-scale structure measurement and Planck cosmic microwave background data. We first evaluate the responsiveness of these metrics to an input tension artificially introduced between the two, using synthetic DES data. We then apply the metrics to the comparison of Planck and actual DES Year 1 data. We find that the parameter differences, Eigentension, and Suspiciousness metrics all yield similar results on both simulated and real data, while the Bayes ratio is inconsistent with the rest due to its dependence on the prior volume. Using these metrics, we calculate the tension between DES Year 1 3 × 2pt and Planck, finding the surveys to be in ∼2.3σ tension under the ΛCDM paradigm. This suite of metrics provides a toolset for robustly testing tensions in the DES Year 3 data and beyond.

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Language(s): eng - English
 Dates: 2021-06-14
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stab1670
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Abbreviation : Mon. Not. Roy. Astron. Soc.
Source Genre: Journal
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Pages: - Volume / Issue: 505 (4) Sequence Number: - Start / End Page: 6179 - 6194 Identifier: ISSN: 0035-8711
ISSN: 1365-8711